Home / 39,863.63-55,009.79-21,958.24

Finding the Fourth Proportional to 39,863.63, 55,009.79 and 21,958.24

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Solution

The fourth proportional to 39,863.63, 55,009.79 and 21,958.24 is: 30,301.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.63 : 55,009.79 = 21,958.24 : x
  2. Step 2: Convert to fraction form
    39,863.63/55,009.79 = 21,958.24/x
  3. Step 3: Cross multiply
    39,863.63x = 55,009.79 × 21,958.24
  4. Step 4: Simplify right side
    39,863.63x = 1,207,918,171.17
  5. Step 5: Solve for x
    x = 1,207,918,171.17/39,863.63
  6. Step 6: Final answer
    x = 30,301.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.